September 11

September 11, 2013

MANDEL NGAN/AFP/Getty Images

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US Defense Secretary Leon Panetta pays his respects after laying a wreath at the Flight 93 National Memorial during ceremonies commemorating the 11th anniversary of the 9/11 attacks in Shanksville, Pennsylvania, on September 10, 2012. AFP PHOTO/Mandel NGAN/POOLMANDEL NGAN/AFP/GettyImages

MANDEL NGAN/AFP/Getty Images

5of26

US Defense Secretary Leon Panetta pays his respects after laying a wreath at the Flight 93 National Memorial during ceremonies commemorating the 11th anniversary of the 9/11 attacks in Shanksville, Pennsylvania, on September 10, 2012. AFP PHOTO/Mandel NGAN/POOLMANDEL NGAN/AFP/GettyImages